%0 Journal Article %A Hassett, Matthew J. %T Extension pathology in regressive isols %J Compositio Mathematica %D 1973 %P 31-39 %V 26 %N 1 %I Noordhoff International Publishing %U http://www.numdam.org/item/CM_1973__26_1_31_0/ %G en %F CM_1973__26_1_31_0